27216937171 has 2 divisors, whose sum is σ = 27216937172. Its totient is φ = 27216937170.

The previous prime is 27216937141. The next prime is 27216937177. The reversal of 27216937171 is 17173961272.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27216937171 is a prime.

It is a super-2 number, since 2×27216937171² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27216937177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13608468585 + 13608468586.

It is an arithmetic number, because the mean of its divisors is an integer number (13608468586).

Almost surely, 2^27216937171 is an apocalyptic number.

27216937171 is a deficient number, since it is larger than the sum of its proper divisors (1).

27216937171 is an equidigital number, since it uses as much as digits as its factorization.

27216937171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 46.

The spelling of 27216937171 in words is "twenty-seven billion, two hundred sixteen million, nine hundred thirty-seven thousand, one hundred seventy-one".